TK-2140
31
ADJUSTMENT
Receiver Section
Item
Condition
Measurement
Adjustment
Specifications/
Test equipment
Unit
Terminal
Unit
Parts
Method
Remark
1. Sensitivity
1) Adj item [SENS]
SSG
Panel
ANT
Panel
Encoder
Adjust for
12dB SINAD or
Adjust
Adjust [
∗∗∗
]
AF VTVM
Universal
knob
maximam
more.
2) Adj item
Oscilloscope
Connector
SINAD.
[L SENS]
➞
[L2 SENS]
➞
[C SENS]
➞
[H2 SENS]
➞
[H SENS]
Adjust [
∗∗∗
]
SSG OUT:-117dBm
MOD:1kHz /
±
3kHz
2. Sensitivity
[Panel Test Mode]
Check
1) CH-Sig:1-1
Check
12dB SINAD or
SSG OUT
more
Wide:-117dBm
(MOD:1kHz /
±
3kHz)
Narrow:-116dBm
(MOD:1kHz /
±
1.5kHz)
3. Squelch
1) Adj item [O SQL]
Encoder
Adjust to point
Adjust
Adjust [
∗∗∗
]
knob
of opening
(Open)
2) Adj item
squelch.
[L OSQL]
➞
[C OSQL]
➞
[H OSQL]
Adjust [
∗∗∗
]
SSG OUT:
12dB SINAD level
3) Adj item [n OSQL]
Adjust [
∗∗∗
]
SSG OUT:
12dB SINAD level
4. Squelch
[Panel Test Mode]
Check
Squelch must
Check
1) CH-Sig:1-1
be opened.
(Open)
SSG OUT:
12dB SINAD level
2) SSG OUT:OFF
Squelch must
be closed.
5. Squelch
1) Adj item [T SQL]
Encoder
Adjust to point
Adjust
Adjust [
∗∗∗
]
knob
of opening
(Open)
2) Adj item
squelch.
[L TSQL]
➞
[C TSQL]
➞
[H TSQL]
Adjust [
∗∗∗
]
SSG OUT:
12dB SINAD level+5dB
3) Adj item [n TSQL]
Adjust [
∗∗∗
]
SSG OUT:
12dB SINAD level+5dB
6. Squelch
[Panel Test Mode]
Check
Squelch must
Check
1) CH-Sig:1-1
be opened.
(Tight)
SSG OUT:
12dB SINAD level+8dB
2) SSG OUT:OFF
Squelch must
be closed.
136.05MHz 146.05MHz
155.05MHz
164.05MHz
173.05MHz